PARENT — one who has begotten offspring, or one who occupies the role of mother or father. In Western societies, parenthood, with …Britannica English vocabulary

ARCHAEBACTERIUM — also spelled Archaeobacterium, plural Archaebacteria, or Archaeobacteria, any member of a group of bacteria that differ in certain morphological, physiological, …Britannica English vocabulary

ANTHROPOLOGICAL LINGUISTICS — study of the relationship between language and culture; it usually refers to work on languages that have no written records. …Britannica English vocabulary

NOSTRATIC HYPOTHESIS — proposed, but still controversial, language family of northern Eurasia. The term Nostratic was proposed in 1903 by the Danish linguist …Britannica English vocabulary